R. de la Madrid
Two analytic continuations of the Lippmann-Schwinger eigenfunctions
(64K, Gzipped tar file)

ABSTRACT.  Gamow vectors should be related with the analytic continuation of the 
Lippmann-Schwinger eigenfunctions to the resonance energy. However, the 
analytic continuation of the Lippmann-Schwinger eigenfunctions to the second sheet is not unique. In this paper, we address this non-uniqueness by constructing and comparing two possible analytic continuations.